Keep your electronics from going barefoot, give them little rubber feet! These small sticky bumpers are our favorite accessory for any electronic device or enclosure. They prevent our projects from sliding around freely, and they also ensure that the terminals on the bottom of electronic boards do not make contact with anything underneath so as to prevent accidental shorts.
They are sticky, but not impossible to remove, and at 8mm round, they're small enough to fit on almost any board. They also have just enough height to give clearance to for solder joints of through-hole components. They come in a pack of 4 pieces so your boards are nice and stable.
Although they may vary in style from time to time, (if we switch suppliers), but they're all 8mm in diameter and 4mm tall.